Expansion-bolt.



Patented Aug. 25, 19M.

E. ADLER.

EXPANSION BOLT.

APPLIUATloN FILED JAN. 9. '1014.

EPI-IRAIM ADLER, 0F NEW N. Y.

Expansion-now.

Specification of Letters Patent.

Patented nog. es, i914.

Application filed January 9, 1914. Seriai'No. 811,175.

To ollf whom it may concern Be it known that I, EPHRAIM' Annan, al citizen' of'the'United-States, and a residentI ofthe city of New York, borough of Manhattan, in the county and State of New York, have invented a new-and Improyed- Expansion-Bolt, of which the following 1s a full, clear, and exact description. i

This inventionf relates to builders hardware and has particular reference to means' for attaching plates, studding or other parts to masonry walls or other structures, such devices being commonly known as expansion bolts. y

Among the objects of this invention is to simplify and improvethis class of devices to render them more serviceabie than similarl devices commonly used.

The fore oing and other objects ofthe in- 20vention wi? l hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which-7- Figure 1 is a' longitudinal section ofx one form ofthe invention; Fig.. 2 is a similar view of a different form of the invention' Fig. 3 is a transverse section on'the line 3 5 of Fig. 1; Fig. 4 is a transverse section on the line 4-4of Fig. 2; and Fig. 5 is a perspective detail referred to below.

The several arts of the device may be made of anyy suitable materials and the relative sizes and proportions, as well as the .general design of the mechanism, may be varled to a considerable extent withoutl def parting from the spirit of the invention hereinafter more fully set forth and specili-l cally claimed.

In that form of the invention shown in Fig. 1 the device comprises a two-part sleeveA 10, each part having an anchoring device 11 having serrations or eorriigations 11 adapted to bite or embed themselves vin the structure of the, masonry A. In this form of the invention each of the anchor members projects through a slot 12 in one of the parts of the sleeve 10, and such anchor is therefore preferably shorter than the sleeve. The inner or adjacent edge-s of the anchor members 11 are provided with spiral threads 13, and said inner edges of the anchors are preferably divergent along general lines.

.v screw 18 passi At 14 show a: tapering wedgefhaving a thread 1'5 coperating with the aforesaid spiral threads 13 of t'he anchors: The outer or larger end of the wedge is provided with a seat 16 for the application of. a screw driver or a wrench whereby said wedge may beforced inwardly v for the purpose of spreading the anchors for positive engagement with-'the walls of the socket av of the wall or other structure. In this forrnof the invention the-sleeve as a whole may be slip ped freely into the socket, the parte thereof beingadapted to be secured ternporarilytogetlier, 4 if desired, lby means of spring rings 1'?, and then the wedge may beforcedinto the position, indicatedv above, to secure the sleeve and: anchoring devices in place.' Said etv Wedgev .is provided with an internal screwI .Y

threaded socketvlt fori coperation with the v through the plate B- which is being secure to the wall.

In Fig. 2 I show a slightly different form or one in which the sleeve and anchor members coincide, forming two parts 19, each having serrations of the character referred to above, for direct gripping cooperation of the socket wall, and at the inner or rear i end of the sleeve are arran edv toothed or serrated tapering walls 20 or coperaticn with a wedge 21 having correspondingly formed edges for cooperation with said walls 20. In this form of the invention the wedge is put in place with the sleeve,the smalll end of the wedge being projected into the space between the tapered walls 20. Said wedge 21, like the one previously described, is of solid or one piece construction, and is provided with an interior socket having a screw thread 21 `for coperation with the binding bolt 18. The wedge 2l is tapered in one di-I rection but is flat in the other direction and operates'in notches 19 ofthe sleeve members.l When this sleeve with the wedge therein is inserted into the socket a, the wedge 'will be prevented from rotating by reason of its coperation with the notches abonvedescribed. When the binding bolt or screw 18 is inserted and connected to the wedge, the lirst ei'ect of the draft upon the bolt will be to cause the wedge to befdrawn bodily toward the outside of the socket, the corrugations of the wedge jumping or snapping over thecorresponding eorrugations of the walls 20, whereb the continued turning or binding action o the bolt will, cause the Mii? ii'xombars 1.9 ofjho sloovo to be {moet} apart and int-o biting engagement with the WAN. of the what..

in both forms of the invention hei'ein ilhisi'uted ia wl De noted that the, wedge constitutes the nut for ooperziion` with the boit, sind, hence the. hoh; is noi, Caused to operate. directly with the sleeve members' oi' the parts connected direc'siy o the, conoro. 'it is fui-thorium@ to he .noef that che wedge wili always ac. m 'miglio its position Wih re lation to the Sloavo monibeis., holding-them expanded @von hoiigh the boit Should hecome i005@ du@ to shrinkage oit' tho motorini oir othoiwvisoL v Hoving thus ihesorihad my invention, claim new and desire to secure by Letters Yin-oni: 4

l. Tho herein dosihed expansion boli comprising, in Combination, n. pair of inde pondent sleeve momhei's movable toward and from @zich other, Said mombozs having teeth or points for engagement wih the wall of the socket sind being pwv'ideii ou their inner or adjacengfaces with divorgeiit WDQUS hm'- iiig tmvorse i'ios., a Wedgey acting lie/Woon Suid-sleeve 'numbers :md having movaho ei gagomoiit with said .ribs and serving to force the sleeve members opai't, said wedge having; an intwmi ,sm-kot with a sci-ow thread, and. :i @humping bo coperating with said Wedge thread.

2. Tho heroin dessorihod expansion boit comprising, in mmi'binatiou, :i of sleeve melfn'km'f having along parts of theii' opposito wn'ls o soiies of teeth, temporary con- ;noixtions surrounding said sleeve members und maintaining them together butipogmiwedge, of solid construction*acting btweon said show members and sewing to inteiock therewith und hold die sloom membos in :separated relation, :mda threaded boh; oo opez'ulingg with the interior of said wedge, suhsmitioy as and for -ho puiposos'set forth. v

in testimony whereof l havo signed my mimo to this; specification, in the piro-sence of mvo suhsvribing witncsoes,

EPHRJM ADLER.

Witnesses GEO. L. Biinmn, PHLiP D, .Homimum 

